20 加法 7 等于多少？
20 + 7 = 27
20加法7 等于 27
竖式演算
验算
- 用减法验算：27 − 7 = 20
- 用减法验算：27 − 20 = 7
相关题目
20 + 6 = 26
20 + 8 = 28
20 + 5 = 25
20 + 9 = 29
20 + 4 = 24
20 + 10 = 30
20 + 11 = 31
20 + 3 = 23
19 + 7 = 26
21 + 7 = 28
22 + 7 = 29
18 + 7 = 25
23 + 7 = 30
17 + 7 = 24
24 + 7 = 31
16 + 7 = 23
1 + 26 = 27
2 + 25 = 27
3 + 24 = 27
4 + 23 = 27
5 + 22 = 27
6 + 21 = 27
59 + 40 = 99
35 + 20 = 55
18 + 20 = 38
16 + 31 = 47
13 + 26 = 39
40 + 43 = 83
30 - 3 = 27
62 - 35 = 27